# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:        潘炎珍  
# Name:         hw01
# Description:
# Author:       98745
# Date:         2019/3/2
#-------------------------------------------------------------------------------

import random
i=1
d={}
while i<=1000:
    d.setdefault(random.randint(0,99))
    i+=1
print(d)
print(len(d))